[Clean] Method names in GeoPointPolarZ are now camel case

In GeoPointPolarZ class, the following methods have been renamed:

• angle_equals -> areAngleEqual
• get_radians -> getRadians
• get_degrees -> getDegrees
• get_natural_degrees -> getNaturalDegrees
• to_cartesian -> toCartesian
• to_Point3D -> toPoint3D
• calculate_section -> calculateSection
• get_section -> getSection